| United States Military Railroad | |
|---|---|
 Orange & Alexandria Railroad rail yard in Alexandria, Virginia | |
| Active | February 1862[1] – 1865 |
| Country |  United States of America |
| Branch |  United States Army |
| Type | Transportation |
| Role | Strategic movement, operational resupply |
| Nickname(s) | "USMRR" |
| Commanders | |
| Notable commanders | Daniel McCallum |
The U.S. Military Railroad (USMRR) was established by the United States War Department as a separate agency to operate any rail lines seized by the government during the American Civil War. An Act of Congress of 31 January 1862[2] authorized President Abraham Lincoln to seize control of the railroads and telegraph for military use in January 1862.[3] In practice, however, the USMRR restricted its authority to Southern rail lines captured in the course of the war. As a separate organization for rail transportation, the USMRR is one of the predecessors of the modern United States Army Transportation Corps.
- ^ Hodges Railroad Tactics p.7
- ^ "Records Relating to the U.S. Military Railroads". National Archives. August 15, 2016. Retrieved June 19, 2017.
- ^ Gable, Railroad Generalship, p. 13.